Resiliently packed valve body



- April 15,1941. H ALLEN A RESILIENTLY PACKED VALVE BODY Filed July 2, 1937 FLLE `L 4l Z 26 50-A 5 40 2 sheets-sheet 1v Z lo 3 I 22 25 f I9 Z I y INVENTOR. HERBERT ALLEN.

BY @513ML Jam @Gea/Je f ATTORNEYS.

April 1 5, 1941. H. ALLEN 2,238,357

` RES'ILIENTLY PACKED VALVEvBODY v Filed July 2, 1937 2 Sheets-Sheet 2 1N VENTOR,

Z 8 ,7 v Y HERBERT ALLEN.

BY v @hm @n1-M13 @004k ATToRNEYz Patente-d Apr. 15, 1,941

UNITED STATES 'r'nTlzNr OFFICE' RESILIENTLY PACKED VALVE BODY Herbert Allen, Houston, Tex., assignor to Cameron Iron Works, Houston, Tex., a corporation Application July 2, 1937, Serial No. 151,656

8 Claims. (Cl. 251-167) The .invention relates toan improvement in valves particularly of a type wherein a yresilient packing is disposed within the valve body and against which the valve member is to abut in such a manner that the pressure applied by the valve member will be uniformly distributed not only against the valve member but against the inside faces of the housing due to the fact that the resilient packing will ilow under pressure.

' In valves of the type wherein fluids under high pressure are to be controlled and particularly where these iluids carry abrasive materials, it has been found that where a small leak occurs the abrasive material soon cuts away the metal of the valve member or the valve seat so that it is impossible thereafter to obtain a seal vwith that valve. tion, therefore, directs itself to a valve wherein a uniform pressure can be applied at all points and in which a resilient packing'member is provided so that any inequalities of the parts will be. compensated for due to the uniform distribution of the pressure and so that the resilient material will flow into any space which is present and prevent leakage.

It is one of the objects of the invention to provide in combination with a valve body and valve member a resilient packing which will uniformly distribute the pressure and effect a seal with both the valve member and the valve body.

The present inven-v Another object of the invention is to provides.

pac member within a valve body in such a manner that it is disposed in a groove and suit-a ably coniined so that pressure applied to it by the valve member will be uniformly distributed.

Another object of the invention is to provide e. packing material for valves which has a substantially resilient body portion so that it may flow when pressure is applied to it by the valve member.

Another object of the invention is 'to conne a resilient packing in a valve member so that pres sure may be applied thereto.

Still another object of the inventipn is to provide a valve packing having aU shaped portion -Other and further objects of the invention will be readily apparent when the following description is considered in connection with the accompanying drawings, wherein:

Figure 1 is a vertical sectional view transversely of the valve passage and showing the valve member in open position.

Fig. 2 is a similar section showing the valve in closed position. v

Fig. 3 is a section taken on the line 3-3 of Fis. l.

Fig. 4 is a perspective view of the packing assembly ready for insertion in thev valve member.

Fig. 5 is a side elevation of the valve in open position and showing certain parts insection to illustrate the arrangement of the packing and the valve member in the housing.

In Fig. 5 the valve generally is illustrated as being made up of a base portion 2 not the bonnet portion 3. The base thas a ange and the bonnet 3 has a ilange E, which are arranged to abut and be clamped together by means of the bolts f The base is shown in longitudinal section in Fig. 5 and is threaded at 'i in order to receive the pipe line connections.

The base 2 has the nuls passage s magitdinally thereof and this passageintersects with the valve chamber 8 which is formed in both the base and the body. The chamber s and passage t' intersect in the enlarged area it. The base 2 is of peculiar construction as will be seen from the sections in Figs. l and 5, in that it is formed with a lateral groove i2 which extends down along the sides of the base and around the body thereof at an elevation below the passage Si. This groove is of substantial vwidth and is arranged to receive .the packing assembly IS. This assembly is shown in perspective view in Fig. 4 and is made upoi. a

base which comprises a U shaped portion i@ hav' in the bonnet 3. The upper edge of this head i9 carriesa retainer plate 2| which abuts against a shoulder 22 formed in the bonnet so that when the bolts t are drawn up tightly the packing assembly will Vbe clamped rmly in position and suflicient pressure `applied thereto 'to hold it securely Aagainst movement. Retainer plate 2i serves to confine the-head portion i9 so that ity cannot ow upwardly into the upper portion of the valve chamber S.

' then clamped in position.

The bonnet 3 carries the valve member 25 which is here shown in the form of a cylinder ram or body whose lower end is rounded at 26, as seen in Fig. 5. rihis curved surface is longitudinally of the base and is seen in section in. Figs. i and 2.

This valve member 25 is internally recessed at il and has one end of this recess threaded at 28 in orderto receive the threaded portion 2U of the stem 3d. This stem is rotatably mounted within the top 3i of the bonnet 3 by having a ange thereon affixed between the retainer rings P.. suitable stuing bor.: 34 is positioned around stern of the valve and the end 35 thereof is of non-circular ecnguration in order to receive a hand wheel or lever by which the stern will be rotated. The upper portion of the body- 25 carries the wing 3l which is arranged to abut against a rib 3e so as to prevent rotation oi' the valve member due to rotation of the stem S3. A vent dit extends from the recess 2l through the lower end of the valveto relieve any suction or compression within the packing upon movement ofthe valve. rihis recess 2l is in turn vented by the passages all into the valve chamber 9.

Las seen in Fig. i, a metal plate $5 is positioned on each side of the leg portions i9 of the packing assembly. These plates are of U shape to correspond with the shape of the base i6 and are preferably vulcanizedl or otherwise attached to the rubber so that they are carried thereby and are in fact iioating upon the rubber. The upper ends of these plates may be beveled at Il if desired. As seen in Fig. 5, these plates extend into the intersection lll beyond the confines of the groove l2 and tend to confine the resilient rubber material of the packing. The inside end d8 of each of these plates is also beveled in such a manner that there is an enlarged area 49 of packing material in the base of the groove I2.

This arrangement ofthe wearing plates is provided so that when the valve member 25 moves to closed position, as seen in Fig. 2, the periphery of the valve member will abut against the inside edges or faces 50 of these wearing i plates. As the stern 30 is further rotated, additional movement of the valve member will occur and in this manner pressure is `applied to the face 5i of the Dafcking and the faces 50 of the wear plates. This, of course, tends to move the wear plates against the packing by moving the beveled portions 48 against the enlarged area l! i which is coniined within the groove.

forrany leakage to occur. It will be noted also that the valve member 25 has an enlarged area or ilange 55 on its upper end'which is arranged to abut against the retainer ring 2l as the valve member moves tonclosed position. In this manf ner the` additional pressure will be applied to the CII head II so as to effect a seal with the valve member on the inside of the valve body. This additional pressure also closes the joint between .the flanges 4 and l so that it is impossible for v any leakage to occur either around the lower end of the valve member or between the valve body and the packing.

The broad idea of the packing coniined. by a pair of iloating reenforcing or retaining plates is not claimed broadly in the present application but is claimed in the applicants copending ap 'plication Serial No. 242,123, led November 23,

Broadly the invention contemplates a resilient packing through which the pressure may flow in order to obtain a uniform sealing pressure against both the valve body and the valve member.

What is claimed is:

l. A valve comprising a base, a bonnet thereon, bothsaid base and bonnet being recessed to form a vertical cylindrical valve chamber, a passage transversely thereo, a cylindrical valve member, means to move said member longitudinally of said chamber to cover or uncover said passage, a groove in said base extending down the sides thereof and around the bottom of the chamber below the elevation of said passage, a resilient packing disposed in said groove and to be abutted by said valve member when it moves to cover said passage so as to form a seal of unis form pressure at all points due to the.flowing of said resilient packing, and a wear plate carried by the exposed edges of said packing so as to confine the packing when said valve member contacts said plates in applying pressure to said packing.

2. A valve comprising a base, a bonnet thereon, both said base and bonnet being recessed to form a verticalcylindrical valve chamber, a passage transversely thereof, a cylindrical valve member, means to move said member longitudinally of. said chamber to cover or uncover said passage, a groove in said base extending down the sides thereof and around the bottom of the chamber below the elevation of said passage, a resilient packing disposedin said groove and to be abutted by said valve member .when it moves to cover said passage so as to form a. seal of uniforin pressure at all points due to the flowing of said resilient packing. said packing including an annular head portion at its top surrounding said chamber, a retainer ring on said head to coniin'e said head, and a s houlder onsaid valve member to abut said ring and eifect a seal about said member andA against said base to completely seal olf around said valve member.

3. A valve body comprising a base and top, a

'longitudinal groove around the inside of salu` base, a. shoulder about the inside lower portion of said top, a resilient packing having a U shaped portion to llt said groove and an annular head transversely thereof to receive said shoulder, means to connect said base and top to conne said head, a valve member movable to close the valve and eifect a seal with the body by contacting said packing, and means on the valve to contact' said head to also apply pressure to said packing.

4. Af valve packing comprising a U shaped leg portion and a. unitary annular head portion transversely of the tops of the legs, and a. wear plate carried by the front and rear-faces of said les portion.

5. A `valve packing comprising a U shaped leg the tops of the legs, 'and' a lwear plate carried v by the front and rear i'aces of said leg portio around the inside edge.

6. A valve packing comprising a U 4shaped leg portion and an annular head portion transi versely of the tops of the legs, a wear plate carried by the front and rear faces of said leg portion around the inside edge, and a retainer ring on 'the top of said head. 1 y

7. Avalve of the character described comprising a body, a valve member, a resilient packing carried by saidbody, plates iloating on said packing; means on said valve 4member to apply pressure to said plates to eilect owing of said.

packing to provide a uniform sealing pressure against said body and said valve. and means to vent said valve member as it moves to sealing or unsealing position.

8. A valve packing comprising a substantially U-shaped leg portion, and an annular head portion transversely joining the tops of the legs, and rigid plates carried by said first portion to completely confine the 'packing -when subjected to pressure.

' HERBERT ALLEN. 

